I recapped my SE/30 recently and all was well, until I noticed that after leaving the machine off overnight there was no startup sound on power up. Once the machine powers up- even for just a couple of seconds it comes back. If I power off after two seconds, wait a few seconds and power on, it's OK. 

I'm wondering if one of the caps I used (electrolytics) is bad.  Does anyone have a suggestion on what I could look for?

I think it's C6 that's in the sound circuit, may be I should replace that one again?

I'm not real happy with the electrolytics-- thinking about buying one of the tantalum cap sets here and redoing it.

Thanks